Bad attitude and unwilling to listen

Bad service. I have been sitting on what's app and email chat since early in the morning, even did calls. My due date is only today however they decided to disconnect me. I usually pay late in the evening on the 1st or even on 2nd and never been disconnect however today the incompeted agents didn't want to admit to the error and reconnect me. I am not a new customer and know exact how due date works. How do I get reconnected when my due date is today? I have been with multichoice for years...they can even check my account history for payments.